I have been ordering from Concord since the eighty's. In those days, it was Mrs. Marx with whom I would talk to on the phone, and once met when she attended a Cleveland Orchestra concert in NY. Since then, her daughter Julia took over the business and I felt a continuation of that friendliness and most importantly, knowledge. She listens to what customers are saying, so when I told her I'm not happy with one of E strings, she recommended this string. Sure enough, I just played my first concerts on it in Mexico, and it's the best E string I've had. I'm very pleased.